ISO 19634:2017定义了用于表示陶瓷基复合材料的物理、机械和热特性的符号，这些特性由相关ISO出版物中描述的方法确定。其目的是避免在报告产品的测量和特性时出现混淆。 在可能的情况下，定义应符合ISO 80000的相关部分。此外，还定义了测量这些特性时使用的符号。

ISO 19634:2017 defines the symbols to be used to represent physical, mechanical and thermal characteristics, as determined by methods described in relevant ISO publications, for ceramic matrix composites. It is aimed at avoiding confusion in reporting measurements and characteristics of products. Where possible, the definitions are in accordance with the relevant parts of ISO 80000. In addition, the symbols used in undertaking measurements of these characteristics are also defined.